the height above the ground of a child on a swing varies from 0.5m at the lowest point to 2.0m at the highest point
A child in a swing is pulled back to a height of h above the lowest point of the swing then released. While the swing moves from height h to its lowest point, how much work is done by the tension force in the ropes of the swing. A.0 B.-2mgh C.2mgh D.-mgh E. mgh
3. A pendulum is released from an initial height 83.0 cm (a) above its lowest point. It then swings down to its lowest point (b), where it contacts a horizontal rod that interrupts its motion and causes it to swing upward with a new radius, as shown below. The highest point it can swing to is 78.2 cm (c). What will be its speed at tha point?
John is jumping on a trampoline. When John is 2.0m above the ground, he is moving upward at a speed of 9.8m/s. What is John's maximum height above the ground?
At the local playground, a child on a swing has a speed of 2.12 m/s when the swing is at its lowest point. Part A: To what maximum vertical height does the child rise, assuming he sits still and "coasts"? Ignore air resistance. Part B: How do your results change if the initial speed of the child is halved?
Alice launches a pendulum from a point that is a height h above the lowest point by giving the bob an initial velocity directed upward along the trajectory. Bob decides to launch the pendulum from the same position at the same speed but directed downward along the trajectory. Whose launch will cause the pendulum to reach a higher highest point? Briefly explain your answer.
A 31.0 kg child on a swing is displaced by a maximum angle of 20 degrees to the vertical above her rest position. Assuming no loss of energy and that the swing's rope is 2m long: a) At what point during the swing will she attain her maximum speed? b) What will be her maximum speed through the subsequent swing? c)Assuming this maximum height was the result of one push from her parent, what was the average force exerted by...
A ball is thrown from a point 1.0 m above the ground. The initial velocity is 20.5 m/s at an angle of 25.0° above the horizontal. (a) Find the maximum height of the ball above the ground. m (b) Calculate the speed of the ball at the highest point in the trajectory. m/s
A child swinging on a swingset with chains of length l wants to swing and jump off the swing to get as far as possible. The child isn't being pushed. At what angle θ should the child let go of the swing to maximize the landing distance and what is the distance jumped as a function of θ? Hints: Model swinging using simple pendulum and jumping using projectile motion. Find equations for speed and height as functions of the swing...
QUESTION 1: A 36.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each chain at the lowest point is 424 N. (a) Find the child's speed at the lowest point. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) N (upward)A 36.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each...